When the filter is replaced, the filter light will automatically reset without any additional steps. This is part of our new and improved Smart RFID Filters. The Breathesmart 45i V2 tracks filter life seamlessly, even when swapping filters. The 45i V2 remembers remaining filter life, offering hassle-free maintenance.

If the filter light is not changing, try the following steps. 

• Ensure the label on filter marked "Top" is facing the top of the purifier

• Ensure pre-filter (mesh layer) is facing out (towards you) 

• Push filter as far back as possible and use the filter lock to secure filter

• Reinstall panel and filter light should be reset

If those steps do not work, please reach out to support via the Chat icon on the website, or call 1-800-630-2396. For further assistance.  We're available 8am-5pm CST